diff --git a/docs/source/sls/algorithm.rst b/docs/source/sls/algorithm.rst
index 6b65d0a1d87ef2fd6b8131d66d553ce9fabca741..1c05d8fe2e7c0677bc8ddd762447415f77e3b52e 100644
--- a/docs/source/sls/algorithm.rst
+++ b/docs/source/sls/algorithm.rst
@@ -6,9 +6,10 @@ Instrument correction
 ---------------------
 
 CSST SLS pipeline是应用于12块无缝光谱模块探测器的仪器效应改正，包含3个波段，每4块探测器对应1个波段：
- - GU: ″ field of view from 255-400nm with a plate scale of ″/pixel.
- + GV: ″ field of view from 400-620nm with a plate scale of ″/pixel.
- * GI: ″ field of view from 620-1000nm with a plate scale of ″/pixel.
+
+ . GU: ″ field of view from 255-400nm with a plate scale of ″/pixel.
+ . GV: ″ field of view from 400-620nm with a plate scale of ″/pixel.
+ . GI: ″ field of view from 620-1000nm with a plate scale of ″/pixel.
 
 pipeline顺序执行一系列的效应改正，生成单次曝光的改正后数据产品。该程序是用Python语言实现，开源地址：。